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Phone Number : +8618507388020
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95% Fine Alumina Ceramic O Ring

  • 95% Fine Alumina Ceramic O Ring
Place of Origin Hunan,China
Brand Name Antaeus
Certification /
Model Number AD-B030
Minimum Order Quantity Negotiation
Price Negotiation
Packaging Details Inner vacuum packaging, outside carton.
Delivery Time 15-45 days
Payment Terms T/T or Negotiation
Supply Ability Full Supply

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Whatsapp:0086 18588475571

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Product Details
Product Name Metallized Alumina Ceramic Rings / Ceramic Insulators For Battery Material Alumina (Aluminum Oxide, Al2O3)
Insulation Resistance 1000M Ω（1000VDC) Thermal Shock Resistance Room Temperature To 850C Will Not Burst Or Leak After Five Operations
Max. Use Temp. 1650℃ Water Absorption 0
ROHS Hardness ≥89 Flexural Strength 550 Mpa(psix10^3)
Compressive Strength 2600(377) Mpa(psix10^3) Coefficient Of Thermal Expansion 8.2 X10^-6/℃
Coefficient Of Thermal Conductivity 17-30.4 W/m.K
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Alumina Ceramic O Ring

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ISO14001 Ceramic O Ring

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ISO14001 alumina ceramic machining
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Product Description

Alumina Seal Ceramic Rings / Industry Insulation Rings

 

1. Description:

The hardness of high-temperature structural ceramics is much higher than that of metals, and the wear resistance at high temperatures is better than that of metals, and especially better than cemented carbide. Metal and ceramic pair sliding. Under lubricated conditions, not only the wear of ceramics is extremely small, but the wear of metal is also smaller than when metals are paired. Most of the parts of the valve mechanism slide at high speed under high load and insufficient lubrication conditions. It is very suitable for ceramic manufacturing to reduce wear. The main disadvantage of ceramic parts in terms of performance is that they are prone to internal cracks during manufacturing. The internal cracks may propagate under stress and cause brittle failure of parts. In addition, temperature sudden changes caused by changes in engine operating conditions, surface damage caused by wear and foreign objects, etc., may affect the reliability and service life of the parts. By applying ceramic coating, the temperature in the combustion chamber of the engine can be improved, and the working efficiency of the engine can be improved.

 

2. Feature Advantages:

1) Refractory, High Temperature Resistance, Maximum Used Temperature: 1800 ºC (3272ºF)
2) Hardness Strength, Wear Resistance Up To Mohz 9.0 ; HRA 80-90
3) High Voltage, Good Insulation Performance ,Electrical Resistivity Up To 10∧14 Ohm.Cm
4) High Polished Surface Up To Rz0.8(Ra0.1) 
5) Superior Mechanical Strength, MAX 10 MPa.m1/2 Fracture toughness
6) Pressure Resistance, Max 2300MPa compressive strength
7) Anti-High Corrosion Resistance, Such As Acid Alkali Resistance
8) Long Service Life

 

3. Material Features / Properties:

Composite (wt %) 99% 99.5% 99.8%
Color   White or Ivory White or Ivory White or Ivory
Density g/cm 3 3.82 3.9 3.92
Hardness HRA 83 85 85
Flexural Strength Mpa (psi*10 3 ) 375 386 381

 

4. Technical Parameters:

Technical Parameters of Ceramics
Items Test Conditions Unit or Symbol 99% AL2O3 95% AL2O3 90% AL2O3 Zirconia Steatite Silicon Carbide
Volume Density -- g/cm3 ≥3.70 ≥3.62 ≥3.40 ≥5.90 ≥2.60 ≥3.08
Tightness -- Pa·m³/s ≤1.0×10-11 ≤1.0×10-11 ≤1.0×10-11 - - -
Liquid Permeability -- -- Pass Pass Pass   Pass -
Flexural Strength - MPa ≥300 ≥280 ≥230 ≥1100 ≥120 ≥400
Elastic Modulus - GPa - ≥280 ≥250 ≥220 - 400
Poisson Ratio - 　 - - 0.20～0.25 0.20～0.25 - - -
Thermal Shock Resistance 800℃( Room Temperature) Cycle: 10 times   Pass Pass Pass - - -
Coefficient of Linear Expansion 20℃～100℃ ×10-6 K-1 - - -   ≤8 -
20℃～500℃ ×10-6 K-1 6.5～7.5 6.5～7.5 6.5～7.5 6.5～11.2 - -
20℃～800℃ ×10-6 K-1 6.5～8.0 6.5～8.0 6.3～7.3   - 4
20℃～1200℃ ×10-6 K-1 - 7.0～8.5 - - - -
Coefficient of Thermal Conductivity 20℃ W/(m·k) - - - - - 90～110
1000℃
Dielectric Constant 1MHz 20℃ - 9.0～10.5 9.0～10 9.0～10 - ≤7.5 -
1MHz 50℃ - - 9.0～10 - - - -
10GHz 20℃ - 9.0～10.5 9.0～10 9.0～10 - - -
Volume Resistivity 100℃ Ω·cm ≥1.0×1013 ≥1.0×1013 ≥1.0×1013 - ≥1.0×1012 -
300℃ ≥1.0×1013 ≥1.0×1010 ≥1.0×1013 - - -
500℃ ≥1.0×109 ≥1.0×108 -- - - -
Disruptive Strength D.C kV/mm ≥17 ≥15 ≥15 - ≥20 -
Chemical Durability 1:9HCl mg/c㎡ ≤0.7 ≤7.0 - - - -
10%NaOH mg/c㎡ ≤0.1 ≤0.2 - -- - -
Grain Size - μm - 3~12 - - - -

 

5. Process Flows:

Formulating --- Granulating --- Forming --- Sintering --- Grinding --- Printing --- Nickel Plating --- Assembing --- Brazing --- Inspecting --- Packing

95% Fine Alumina Ceramic O Ring 0

 

6. Production Facilities: Prilling Tower , Forming Machine , High Temperature Sintering Kiln

95% Fine Alumina Ceramic O Ring 1

 

7. Detection Devices:

Electric Performance Tester , Film Thickness Analyzer , Granulometer , Helium Mass Spectrometer Leak Detector , Universal Pull Force Meter

95% Fine Alumina Ceramic O Ring 2

 

 8. Our advantages: Quality Assurance ; Price Competitive ; Factory Supply Directly ; Good Service

95% Fine Alumina Ceramic O Ring 3

 

9. Shipping and Package:

95% Fine Alumina Ceramic O Ring 4

10. Our aimed market: 

95% Fine Alumina Ceramic O Ring 5

 

Notes:Above information only for reference and please contact with us for more details freely when you have any inquiry!

Tags:

Al2O3 Alumina Ceramic Rings

Sealed Alumina Ceramic Rings

Al2O3 Insulation Rings